This paper points out various formulas of rock resistant factor are special cases of this formula.

并指出，现有的各种岩石抗力系数公式均是本公式的特例。

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Moreover, using porosity changing formula can calculate the rock elastic recoverable reserves and elastic recovery.

此外，用孔隙度变化公式还可以计算岩石弹性可采储量和弹性采收率。

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Based on the Mohr-Column rule, the formula for calculating rock resistant coefficient is given in the paper, and the formula can be applied in kinds of rock conditions.

基于莫尔—库仑屈服准则推导得出的围岩抗力系数计算公式，具有较强实用价值。

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It is designed to withstand the decibels of the loudest rock band or even the noise of a Formula 1 racing car.

ECONOMIST: Germany's export champions

The EPA has subpoenaed Halliburton for the secret formula for the liquid chemical cocktail it pumps into underground rock structures so natural gas can be accessed through a process known as hydraulic fracturing or fracking.

FORBES: EPA subpoenas Halliburton over fracking